Photovoltaic system

Abstract

The application relates to a simple, low-cost and easy-to-install photovoltaic system, a transmission assembly in the photovoltaic system comprising a first rope, a second rope, a first telescopic rod, a second telescopic rod and a rope winding and unwinding wheel, the first telescopic rod and the second telescopic rod each comprising a sleeve and a sleeve rod, the sleeve being rotationally connected with a first rotating wheel inside the sleeve, the sleeve being rotationally connected with a second rotating wheel and a third rotating wheel outside the sleeve, the sleeve rod being rotationally connected with a fourth rotating wheel accommodated in the sleeve; one end of the first rope is fixed to the sleeve of the first telescopic rod, the other end of the first rope is sequentially wound around the third rotating wheel, the fourth rotating wheel and the second rotating wheel of the first telescopic rod, the third rotating wheel, the fourth rotating wheel and the second rotating wheel of the second telescopic rod and then fixed to the rope winding and unwinding wheel; one end of the second rope is fixedly connected with the sleeve of the first telescopic rod, the other end of the second rope is sequentially wound around the fourth rotating wheel, the first rotating wheel and the second rotating wheel of the first telescopic rod, the third rotating wheel, the first rotating wheel, the fourth rotating wheel, the first rotating wheel and the second rotating wheel of the second telescopic rod and then fixed to the rope winding and unwinding wheel.

Description

Technical Field

[0001] This application relates to the field of photovoltaics, specifically to a photovoltaic system. Background Technology

[0002] Solar photovoltaic power generation uses solar photovoltaic modules as electrical conversion devices to convert solar energy into electrical energy. Photovoltaic modules have been widely used as a new type of energy.

[0003] Solar photovoltaic (PV) mounting systems are widely used in solar PV power plants as supports and fasteners for PV modules. Among them, adjustable tilt PV mounting systems, as a new type of PV mounting system, have begun to be used, and their power generation has been significantly improved.

[0004] In traditional photovoltaic systems, the transmission components used to adjust the angle of photovoltaic panels, especially the mechanical rotating mechanism, have numerous gears and a variable gearbox with a large speed ratio. These components have drawbacks such as complex structure, high cost, difficult installation, and poor reliability. Summary of the Invention

[0005] The technical problem solved by this application is to propose a photovoltaic system that is simple in structure, low in cost, and easy to install.

[0006] The technical solution of this application is:

[0007] A photovoltaic system includes at least one photovoltaic unit, said photovoltaic unit comprising:

[0008] First support;

[0009] A second support, on which at least one photovoltaic panel is mounted, and the second support is connected to the first support in a manner rotatable about a first axis of rotation; and

[0010] A first motor is connected to the second bracket via a first transmission assembly to drive the second bracket to rotate around the first rotation axis;

[0011] The first transmission assembly includes a first rope, a second rope, a first telescopic rod, a second telescopic rod, and a rope take-up and release reel, wherein:

[0012] The first telescopic rod and the second telescopic rod are arranged at intervals along a direction parallel to the aforementioned first rotation axis. Each of the first telescopic rod and the second telescopic rod includes a sleeve and a rod movably inserted into the sleeve. One end of the rod is located outside the sleeve and is rotatably connected to the second bracket. The sleeve is rotatably connected to the first bracket. A first rotating wheel is rotatably connected inside the sleeve. A second rotating wheel and a third rotating wheel are rotatably connected outside the sleeve. A fourth rotating wheel housed inside the sleeve is rotatably connected to the rod.

[0013] One end of the first rope is fixed to the sleeve of the first telescopic rod, and the other end passes sequentially around the third wheel, the fourth wheel and the second wheel of the first telescopic rod, and the third wheel, the fourth wheel and the second wheel of the second telescopic rod, and then around and fixed to the rope take-up and release wheel along the first circumferential direction;

[0014] One end of the second rope is fixedly connected to the sleeve of the first telescopic rod, and the other end passes sequentially around the fourth wheel, the first wheel and the second wheel of the first telescopic rod, and the third wheel, the first wheel, the fourth wheel, the first wheel and the second wheel of the second telescopic rod, and then around and fixed to the rope take-up and release wheel along a second winding direction opposite to the first winding direction;

[0015] The first motor is connected to the rope take-up and release pulley to drive the rope take-up and release pulley to rotate around its own axis.

[0016] In one alternative design, the first motor is fixed to the sleeve of the second telescopic rod.

[0017] In one alternative design, both the first rope and the second rope are steel wire ropes.

[0018] In one optional design, the outer circumferential surface of the rope take-up and release reel is provided with a plurality of annular grooves spaced apart along the axial direction of the rope take-up and release reel, and the first rope and the second rope are respectively connected to two of the annular grooves.

[0019] In one optional design, there are multiple photovoltaic panels, which are spaced apart along a first direction parallel to the first axis of rotation.

[0020] In one alternative design, each of the photovoltaic panels is connected to the second support in a manner that allows it to rotate about its respective second rotation axis, wherein each of the second rotation axes is perpendicular to the first rotation axis and is parallel to each other.

[0021] In one alternative design, each of the photovoltaic panels is a rectangular structure, and the length of the rectangular structure is parallel to the second rotation axis, and the width of the rectangular structure is parallel to the second rotation axis.

[0022] In one optional design, there are multiple photovoltaic units, the first motor of the multiple photovoltaic units is the same motor, and the rope take-up and release reel of the multiple photovoltaic units is the same rope take-up and release reel.

[0023] In one optional design, the outer circumferential surface of the rope take-up and release reel is provided with a plurality of annular grooves spaced apart along the axial direction of the rope take-up and release reel, and a plurality of first ropes and a plurality of second ropes are respectively connected to the plurality of annular grooves in a one-to-one correspondence.

[0024] This application has at least the following beneficial effects:

[0025] 1. The first transmission component in the photovoltaic system of this application, used to transmit driving force to the photovoltaic panel, mainly consists of low-cost ropes, pulleys, and movable sleeves and rods. During use, the ropes primarily bear tensile stress, exhibiting high reliability, resistance to damage, and a long service life. Furthermore, the two pulleys (the fourth pulley) in this first transmission component are movable pulleys that cooperate with the ropes, thus providing a speed reduction transmission function and increasing the driving force of the motor on the second support.

[0026] 2. The lowering angle of the second support is not purely based on its gravity, but is achieved by pulling the second rope, which can effectively prevent the second support from failing to be lowered normally due to mechanical jamming, thus ensuring high reliability.

[0027] 3. The photovoltaic system comprising multiple photovoltaic units in this application uses the same first motor to drive the photovoltaic panels in each photovoltaic unit to rotate, which saves equipment costs and is easy to install. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this application, and are not intended to limit this application.

[0029] Figure 1 This is a schematic diagram of the overall structure of the photovoltaic system in Embodiment 1 of this application.

[0030] Figure 2 yes Figure 1 A schematic diagram of a local structure.

[0031] Figure 3 yes Figure 2 The diagram shows the structure from another perspective.

[0032] Figure 4 yes Figure 3 Enlarged schematic diagram of part X1.

[0033] Figure 5 yes Figure 3 A schematic diagram of the structure from another perspective after the first support and other components have been removed.

[0034] Figure 6 yes Figure 5 Enlarged schematic diagram of part X2.

[0035] Figure 7 This is a schematic diagram of the structure of the first and second telescopic rods in Embodiment 1 of this application.

[0036] Figure 8 yes Figure 7 A cross-sectional view.

[0037] Figure 9 yes Figure 7 A schematic diagram of the middle sleeve.

[0038] Figure 10 yes Figure 7 Exploded view of the middle sleeve rod

[0039] Figure 11 yes Figure 3 A side view of the structure shown.

[0040] Figure 12 yes Figure 11 A schematic diagram of the structure after some of the middle components have been removed or cut off.

[0041] Figure 13 This is a schematic diagram of the cooperative structure of the second motor, the first telescopic rod, the second telescopic rod, and the first rope in Embodiment 1 of this application.

[0042] Figure 14 This is a schematic diagram of the cooperative structure of the second motor, the first telescopic rod, the second telescopic rod, and the second rope in Embodiment 1 of this application.

[0043] Figure 15 This is a schematic diagram of the photovoltaic system in Embodiment 2 of this application.

[0044] Figure 16 yes Figure 15 A partial structural diagram.

[0045] Figure 17 yes Figure 16 Enlarged schematic diagram of part X3 in the middle.

[0046] Explanation of reference numerals in the attached figures:

[0047] F1 - First direction;

[0048] C1 - First axis of rotation, C2 - Second axis of rotation;

[0049] 1-First support, 2-Second support, 3-Photovoltaic panel, 4-First motor, 5-First rope, 6-Second rope, 7-Sleeve, 8-Sleeve rod, 9-First reel, 10-Second reel, 11-Third reel, 12-Fourth reel, 13-Rope take-up and release reel, 14-Second motor, 15-Third support. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the described embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. It is understood that, without conflict, some technical means of the various embodiments described herein can be substituted for or combined with each other.

[0051] In the description of this application and the claims, the terms "first," "second," etc., are used only to distinguish the described objects and have no sequential or technical meaning. Therefore, objects specified with "first," "second," etc., may explicitly or implicitly include one or more of those objects. Furthermore, the words "one" or "a" do not indicate a quantity limitation, but rather indicate the presence of at least one, while "multiple" indicates not less than two.

[0052] In the description of this application and the claims, the terms "connection," "installation," "fixation," and "reception," unless otherwise specified, should be interpreted broadly. For example, "connection" can mean a separate connection or an integral connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean a non-detachable connection or a detachable connection. As another example, "reception" does not necessarily mean complete containment; this concept also includes the containment of a portion that protrudes externally. Those skilled in the art can understand the specific meaning of the aforementioned terms in this application based on the specific circumstances.

[0053] In the description of this application and the claims, if terms such as "above," "below," or "horizontal" indicate orientation or positional relationships based on the orientation or positional relationships shown in the drawings, they are only for the purpose of clearly and simply describing this application, and do not indicate or imply that the elements referred to must have a specific orientation or be constructed and operated in a specific orientation. These directional terms are relative concepts used for relative description and clarification, and may change accordingly depending on the orientation of the components in the drawings. For example, if the device in the drawings is flipped, an element described as "below" other elements will be positioned "above" other elements.

[0054] In the description of this application and the claims, the terms "in sequence" or "in order," such as the phrase "A, B, C arranged in sequence," only indicate the order of arrangement of elements A, B, and C, and do not exclude the possibility of arranging other elements between A and B and / or between B and C.

[0055] In the description of this application and the claims, the terms "stacked" or "laminated" include not only cases where the layers are in contact with each other (or laminated), but also cases where another layer is sandwiched between them (or laminated).

[0056] In the description of this application and the claims, the terms "based on" or "according to" are used to describe one or more factors that influence the determination. This term does not exclude additional factors influencing the determination. That is, the determination may be based solely on these factors or at least partially on them. For example, the phrase "based on A to determine B" means that A is a factor influencing the determination of B, and this phrase does not exclude the possibility that the determination of B may also be based on C.

[0057] In the description of this application and the claims, the term "in response to" and related terms mean that one signal or event is affected to some extent by another signal or event, but not necessarily completely or directly. If event A occurs "in response to" event B, then A may be directly or indirectly responsive to B. For example, the occurrence of B may ultimately lead to the occurrence of A, but there may be other intermediate events and / or conditions. In other cases, B may not necessarily lead to the occurrence of A, and A may occur even if B has not yet occurred. Furthermore, the term "in response to" can also mean "at least partially responsive to". The term "determine" broadly covers a wide variety of actions, including calculation, computation, processing, derivation, investigation, search (e.g., searching in a table, database, or other data structure), discovery, and similar actions, as well as receiving (e.g., receiving information), accessing (e.g., accessing data in memory), and similar actions, as well as parsing, selecting, choosing, building, and similar actions, etc. Definitions of other terms will be given in the description below.

[0058] In the description of this application specification and claims, the term "if" is generally interchangeable with "when," "at," "in response to determination," or "in response to detection," depending on the context.

[0059] In the description of this application and the claims, the term “configured as” is generally interchangeable with “having the ability to,” “designed to,” “used for,” or “capable of”, depending on the context.

[0060] In the description of this application and the claims, if there is a "direction" of motion, including motion with a directional component, the term "in direction" is not necessarily understood as motion only in that one direction. Those skilled in the art can understand the specific meaning of the aforementioned terms in this application according to the specific circumstances.

[0061] Embodiments of this application will now be described with reference to the accompanying drawings.

[0062] <Example 1>

[0063] Figures 1 to 14 A specific embodiment of the photovoltaic system of this application is shown. The photovoltaic system includes a photovoltaic unit comprising a first support 1, a second support 2, and a first motor 4. A photovoltaic panel 3 is mounted on the second support 2, and the second support 2 is connected to the first support 1 (above it) in a manner rotatable about a first rotation axis C1. The weight of the second support 2 is supported by the first support 1, and the weight of the photovoltaic panel 3 is supported by the second support 2. The first motor 4 is connected to the second support 2 via a first transmission assembly to drive the second support 2 to rotate about the first rotation axis C1, thereby adjusting the angle of sunlight exposure of the photovoltaic panel 3 on the second support 2.

[0064] The aforementioned first transmission assembly includes a first rope 5, a second rope 6, a first telescopic rod, a second telescopic rod, and a rope take-up and release pulley, wherein:

[0065] The first and second telescopic rods are arranged at intervals along a direction parallel to the aforementioned first rotation axis C1. Each of the first and second telescopic rods includes a sleeve 7 and a rod 8 movably inserted into the sleeve 7. One end of the rod 8 is located outside the sleeve 7 and rotatably connected to the second bracket 2. The sleeve 7 is rotatably connected to the first bracket 1. A first rotating wheel 9 is rotatably connected inside the sleeve 7, and a second rotating wheel 10 and a third rotating wheel 11 are rotatably connected outside the sleeve 7. A fourth rotating wheel 12, housed within the sleeve 7, is rotatably connected to the rod 8.

[0066] One end of the first rope 5 is fixed to the sleeve 7 of the first telescopic rod, and the other end passes sequentially around the third wheel 11, the fourth wheel 12 and the second wheel 10 of the first telescopic rod, and the third wheel 11, the fourth wheel 12 and the second wheel 10 of the second telescopic rod, and then around and fixed to the rope take-up and release wheel along the first circumferential direction.

[0067] One end of the second rope 6 is fixedly connected to the sleeve 7 of the first telescopic rod, and the other end passes sequentially around the fourth reel 12, the first reel 9, and the second reel 10 of the first telescopic rod, and then around the third reel 11, the first reel 9, the fourth reel 12, the first reel 9 (twice), and the second reel 10 of the second telescopic rod, before being fixed to the rope take-up and release reel in a second looping direction. The aforementioned second looping direction is opposite to the first looping direction; for example, if the first looping direction is clockwise, the second looping direction is counterclockwise.

[0068] The first motor 4 is connected to the rope take-up and release wheel to drive the rope take-up and release wheel to rotate around its own axis.

[0069] It is understandable that the first rope 5 and the second rope 6 are wound in opposite directions on the rope take-up and release wheel, so that when one rope is wound up by the rope take-up and release wheel, the other rope is released.

[0070] To tilt the second bracket 2 upwards, control the first motor 4 to rotate forward, thereby driving... Figure 13 The left end of the first rope 5 is wound up, and the wound first rope 5 pulls the two fourth pulleys 12 of the two telescopic rods. Figure 13 The system rotates and rises, causing the two sliding rods on the left and right to extend out of the two sleeves 7 respectively. This increases the length of the two telescopic rods, causing the second support 2 to rotate upwards around the first rotation axis C1. As the length of the two telescopic rods increases, the two fourth rotating wheels 12 in the two telescopic rods will pull the second rope 6 upwards, preventing the second rope 6 released from the rope take-up wheel from becoming completely loose.

[0071] To lower the second support 2 by a certain angle, the first motor 4 is reversed, thereby driving... Figure 14 The left end of the second rope 6 is wound up, and the wound second rope 6 pulls the two fourth pulleys 12. Figure 14 The system rotates and descends, causing the two sliding rods on the left and right to retract into the two sleeves 7 respectively. This reduces the length of the two telescopic rods, causing the second support 2 to rotate downwards around the first rotation axis C1. During the process of the two telescopic rods reducing their length, the two fourth rotating wheels 12 in the two telescopic rods will pull the first rope 5 downwards, so that the first rope 5 released from the rope take-up wheel will not become completely loose.

[0072] The lowering of the second support 2 is not solely due to its gravity, but is achieved by pulling the second rope 6, which effectively prevents the second support 2 from failing to lower properly due to mechanical jamming.

[0073] To avoid interference between the first rope 5 and the second rope 6 during winding and unwinding, the aforementioned rope winding and unwinding wheel can be equipped with two rope grooves, with one end of the first rope 5 and the second rope 6 respectively wound into these two rope grooves.

[0074] In this embodiment, the first motor 4 is fixed to the sleeve 7 of the second telescopic rod so that it can change synchronously with the sleeve 7 when the angle position of the sleeve 7 changes during use.

[0075] To prevent the first rope 5 and the second rope 6 from interfering with each other during winding and unwinding, two annular grooves are provided around the outer circumference of the rope winding and unwinding wheel, spaced apart along the axial direction of the rope winding and unwinding wheel, and the first rope 5 and the second rope 6 are respectively connected to these two annular grooves.

[0076] In this embodiment, the second support 2 has multiple photovoltaic panels 3, which are spaced apart along a first direction F1 parallel to the first rotation axis C1. The first rope 5 and the second rope 6 are both high-tensile-strength steel wire ropes. Each photovoltaic panel 3 has a rectangular structure, with its length parallel to the second rotation axis C2 and its width parallel to the first rotation axis C1. This design helps improve the structural compactness of the photovoltaic system.

[0077] The rotation of the second bracket 2 around the first rotation axis C1 only allows for angle adjustment of the photovoltaic panel 3 in a single direction, and cannot simultaneously achieve longitude and latitude tracking of the photovoltaic panel 3. Therefore, in this embodiment, each photovoltaic panel 3 is connected to the second bracket 2 in a manner that allows it to rotate around its corresponding second rotation axis C2. The rotation of the photovoltaic panel 3 on the second bracket 2 is controlled by… Figure 11 The second motor 14 is shown in the image.

[0078] In this embodiment, the second rotation axis C2 corresponding to each photovoltaic panel 3 is parallel to each other, and the second rotation axis C2 is perpendicular to the first rotation axis C1.

[0079] <Example 2>

[0080] Figures 15 to 17 Another specific embodiment of the photovoltaic system of this application is shown, which includes multiple ( Figure 15 A total of six photovoltaic units are shown in the figure, and the structure of each photovoltaic unit is basically the same as that of the photovoltaic unit in the embodiment. The structure and working principle of the photovoltaic system can be understood by referring to the description of Embodiment 1.

[0081] In this embodiment, the aforementioned multiple photovoltaic units share a first motor 4 and the same rope take-up and release wheel 13, that is, multiple photovoltaic units share the same first motor 4 to drive the second bracket 2 in each photovoltaic unit to rotate around the first rotation axis C1. Figure 17 The rope take-up and release wheel 13 connected to the first motor 4 is shown in this embodiment. The structure of the telescopic take-up and release wheel in the above embodiment 1 can also be understood by referring to the description of the rope take-up and release wheel 13 in this embodiment.

[0082] Compared to Embodiment 1, this embodiment also changes the installation position of the first motor 4, and installs it on the third bracket 15, which is fixed to a total of six first brackets 1 of the six photovoltaic units.

[0083] Please refer to Figure 17 and combined Figure 16To prevent adjacent first ropes 5 and / or second ropes 6 on the rope take-up and release wheel 13 from interfering with each other during take-up and release, this embodiment provides a total of 12 annular grooves on the rope take-up and release wheel 13. A total of 6 first ropes 5 and 6 second ropes 6 (one end) from the six photovoltaic systems are respectively connected to these 12 annular grooves.

[0084] The above are merely exemplary embodiments of this application and are not intended to limit the scope of protection of this application, which is determined by the appended claims.

Claims

1. A photovoltaic system comprising at least one photovoltaic unit, characterized in that, The photovoltaic unit includes: First support; A second support, on which at least one photovoltaic panel is mounted, and the second support is connected to the first support in a manner rotatable about a first axis of rotation; and A first motor is connected to the second bracket via a first transmission assembly to drive the second bracket to rotate around the first rotation axis; The first transmission assembly includes a first rope, a second rope, a first telescopic rod, a second telescopic rod, and a rope take-up and release reel, wherein: The first telescopic rod and the second telescopic rod are arranged at intervals along a direction parallel to the aforementioned first rotation axis. Each of the first telescopic rod and the second telescopic rod includes a sleeve and a rod movably inserted into the sleeve. One end of the rod is located outside the sleeve and is rotatably connected to the second bracket. The sleeve is rotatably connected to the first bracket. A first rotating wheel is rotatably connected inside the sleeve. A second rotating wheel and a third rotating wheel are rotatably connected outside the sleeve. A fourth rotating wheel housed inside the sleeve is rotatably connected to the rod. One end of the first rope is fixed to the sleeve of the first telescopic rod, and the other end passes sequentially around the third wheel, the fourth wheel and the second wheel of the first telescopic rod, and the third wheel, the fourth wheel and the second wheel of the second telescopic rod, and then around and fixed to the rope take-up and release wheel along the first circumferential direction; One end of the second rope is fixedly connected to the sleeve of the first telescopic rod, and the other end passes sequentially around the fourth wheel, the first wheel and the second wheel of the first telescopic rod, and the third wheel, the first wheel, the fourth wheel, the first wheel and the second wheel of the second telescopic rod, and then around and fixed to the rope take-up and release wheel along a second winding direction opposite to the first winding direction; The first motor is connected to the rope take-up and release pulley to drive the rope take-up and release pulley to rotate around its own axis.

2. The photovoltaic system according to claim 1, characterized in that, The first motor is fixed to the sleeve of the second telescopic rod.

3. The photovoltaic system according to claim 1, characterized in that, Both the first rope and the second rope are steel wire ropes.

4. The photovoltaic system according to claim 1, characterized in that, The outer circumferential surface of the rope take-up and release reel is provided with a plurality of annular grooves arranged at intervals along the axial direction of the rope take-up and release reel, and the first rope and the second rope are respectively connected to two of the annular grooves.

5. The photovoltaic system according to claim 1, characterized in that, The photovoltaic panels are multiple, and the multiple photovoltaic panels are arranged at intervals along a first direction parallel to the first rotation axis.

6. The photovoltaic system according to claim 5, characterized in that, Each of the photovoltaic panels is connected to the second bracket in a manner that allows it to rotate about its respective second rotation axis, wherein each of the second rotation axes is perpendicular to the first rotation axis and is parallel to each other.

7. The photovoltaic system according to claim 6, characterized in that, Each of the photovoltaic panels is a rectangular structure, and the length of the rectangular structure is parallel to the second rotation axis, while the width of the rectangular structure is parallel to the first rotation axis.

8. The photovoltaic system according to claim 1, characterized in that, There are multiple photovoltaic units, the first motor of the multiple photovoltaic units is the same motor, and the rope take-up and release wheel of the multiple photovoltaic units is the same rope take-up and release wheel.

9. The photovoltaic system according to claim 8, characterized in that, The outer circumferential surface of the rope take-up and release reel is provided with a plurality of annular grooves arranged at intervals along the axial direction of the rope take-up and release reel, and the plurality of first ropes and the plurality of second ropes are respectively connected to the plurality of annular grooves in a one-to-one correspondence.

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